RES has been building off-grid solar power systems on HawaiÊ»i Island since 1992, installing some of the island’s first solar power systems. With thirty years of experience designing, building, and maintaining renewable energy systems in HawaiÊ»i, RES’ is one of the few companies in the state operating long enough to observe the full lifecycle of solar and energy storage systems. They serve our community, with integrity, expertise, and excellence.